| Year | Count |
|---|---|
| 1933 | 7 |
| 1950 | 7 |
| 1951 | 10 |
| 1954 | 5 |
| 1955 | 25 |
| 1956 | 5 |
| 1957 | 15 |
| 1958 | 12 |
| 1959 | 19 |
| 1960 | 53 |
| 1961 | 38 |
| 1962 | 28 |
| 1963 | 52 |
| 1964 | 23 |
| 1965 | 17 |
| 1967 | 20 |
| 1968 | 50 |
| 1969 | 34 |
| 1970 | 28 |
| 1971 | 60 |
| 1972 | 29 |
| 1973 | 291 |
| 1974 | 136 |
| 1975 | 47 |
| 1976 | 63 |
| 1977 | 27 |
| 1978 | 20 |
| 1979 | 16 |
| 1980 | 31 |
| 1981 | 29 |
| 1982 | 27 |
| 1983 | 10 |
| 1987 | 25 |
| 1988 | 15 |
| 1989 | 7 |
| 1991 | 5 |
| 2001 | 5 |
| 2014 | 5 |
| 2017 | 10 |
| 2020 | 13 |
| 2022 | 21 |
| 2023 | 18 |
| 2024 | 27 |